Porous solids characterization

As a general rule, adsorbates above their critical temperatures do not give multilayer type isotherms. In such a situation, a porous absorbent behaves like any other, unless the pores are of molecular size, and at this point the distinction between adsorption and absorption dims. Below the critical temperature, multilayer formation is possible and capillary condensation can occur. These two aspects of the behavior of porous solids are discussed briefly in this section. Some lUPAC (International Union of Pure and Applied Chemistry) recommendations for the characterization of porous solids are given in Ref. 178. 

Recommendations for the Characterization of Porous Solids, Pure Appl. Chem., 66, 1739 (1994). 

The second edition, like the first, is addressed to those workers in academic laboratories or industrial laboratories who are not necessarily specialists in the field of gas adsorption, but whose work is concerned either directly or indirectly with the characterization of finely divided or porous solids. 

Volume 39 Characterization of Porous Solids. Proceedings of the lUPAC Symposium (COPS I), Bad Soden a. Ts., April 26-29,1987 edited by K.K. Unger, J. Rouquerol, K.S.W. Sing and H. Krai Volume 40 Physics of Solid Surfaces 1987. Proceedings of the Fourth Symposium on Surface Physics, Bechyne Castle, September 7-11,1987 edited by J. Koukal... 

Volume 61 Natural Gas Conversion. Proceedings of the Symposium on Natural Gas Conversion, Oslo, August 12-17,1990 edited by A. Holmen, K.-J. Jens and S. Kolboe Volume 62 Characterization of Porous Solids II. Proceedings of the lUPAC Symposium (COPS II), Alicante, May 6-9,1990... 

Volume 87 Characterization of Porous Solids III. Proceedings of the lUPAC Symposium (COPS III), Marseille, France, May 9-12,1993... 

Volume 39 Characterization of Porous Solids. Proceedings of the lUPAC Symposium... 

D Uzio, J Peureux, A Giroir-Fendler, J-A. Dalmon and J.D.F. Ramsay, Characterization of Porous Solids III, Studies Surf Sc Cat, Elsevier, 87 (1994) 411. 

K. J. Packer, J. J. Tessier 1996, (The characterization of fluid transport in a porous solid by pulsed gradient stimulated echo NMR), Mol. Phys. 87, 267. 

Improved characterization of the morphological/microstructural properties of porous solids, and the associated transport properties of fluids imbibed into these materials, is crucial to the development of new porous materials, such as ceramics. Of particular interest is the fabrication of so-called functionalized ceramics, which contain a pore structure tailored to a specific biomedical or industrial application (e.g., molecular filters, catalysts, gas storage cells, drug delivery devices, tissue scaffolds) [1-3]. Functionalization of ceramics can involve the use of graded or layered pore microstructure, morphology or chemical composition. 

J.A. Martens, P. Ruiz and G. Poncelet Characterization of Porous Solids VI... 

Proceedings of the 4th Asia-Pacific Chemical Reaction Engineering Symposium (APCRE 05), Syeongju, Korea, June 12-15, 2005 edited by H.-K. Rhee, I.-S. Nam and J.M. Park Characterization of Porous Solids VII... 

Proceedings of the 7th International Symposium on the Characterization of Porous Solids (COPS-VII), Aix-en-Provence, France, May 26-28, 2005 edited by Ph.L. Llewellyn, F. Rodriquez-Reinoso, J. Rouqerol and N. Seaton... 

Abstract The principle of catalytic SILP materials involves surface modification of a porous solid material by an ionic liquid coating. Ionic liquids are salts with melting points below 100 °C, generally characterized by extremely low volatilities. In the examples described in this paper, the ionic liquid coating contains a homogeneously dissolved Rh-complex and constitutes a uniform, thin film, which itself displays the catalytic reactivity in the system. Continuous fixed-bed reactor technology has been applied successfully to demonstrate the feasibility of catalytic SILP materials for propene hydroformylation and methanol carbonylation. 

N. Floquet, J. P. Coulomb, G. Andre and R. Kahn, Studies in Surface Science and Catalysis, 2007, 160(Characterization of Porous Solids VII), 375. 

H Giesche. In B McEnaney, TJ Mays. J Rouquerol, F Rodriguez-Reinoso, KSW Sing, KK Unger, eds. Characterization of Porous Solids IV Cambridge, UK Royal Society of Chemistry, 1997, pp 171-179. 

The pore-size distribution is the distribution of pore volume with respect to pore size (Figure 3.66). It is an important factor controlling the diffusion of reactants and products in the porous solid and thus an essential property for its characterization. The computation of pore size distribution involves a number of assumptions, and therefore reporting of the data should always be accompanied by an indication of the method used for its determination. 

P.J. Branton, J.Dougherty, G Lockhart and J.W White, Characterization of Porous Solids IV, 668... 

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